It is also dependent on the environment. My first job in the 1990s was programming VB for MS Access. I learned the hard way that if the bug wasn't obvious, it

It is also dependent on the environment. My first job in the 1990s was programming VB for MS Access. I learned the hard way that if the bug wasn't obvious, it was probably Microsoft's fault. And over and over again I was able to demonstrate that it really WAS their fault. My next job was in Perl. It took me a couple of years to find a bug that wasn't my own mistake.